<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <meta name="geometry" content="diagram">
  <link rel="stylesheet" href="./assets/common.css">
  <title>point_circle</title>
  <style>
	#map { position:absolute; top:0; bottom:0; width:100%; }
  </style>
</head>

<body>
<div id="map"></div>
<script src="https://webapi.amap.com/maps?v=1.4.8&key=15cd8a57710d40c9b7c0e3cc120f1200&plugin=Map3D"></script>
<script src="./assets/jquery-3.2.1.min.js"></script>
<script src="./assets/dat.gui.min.js"></script>
<script src="../build/L7.js"></script>
<script>

const scene = new L7.Scene({
  id: 'map',
  mapStyle: 'dark', // 样式URL
  center: [120.132624,30.281774],
  pitch: 0,
  zoom: 3.88
});
scene.on('loaded', () => {
  $.get('https://gw.alipayobjects.com/os/basement_prod/7359a5e9-3c5e-453f-b207-bc892fb23b84.csv', data => {
    var layer = scene.HeatmapLayer({
      zIndex: 2
    })
    .source(data, {
      parser: {
        type: 'csv',
        x: 'lng',
        y: 'lat'
      },
      transforms:[
        {
          type: 'map',
          callback:function(item){
            const [x, y] = item.coordinates;
            item.lat = item.lat*1;
            item.lng = item.lng*1;
            item.v = item.v *1;
            item.coordinates = [x*1,y*1];
            return item;
          }

        },
        {
        type: 'grid',
        size: 160000,
        field:'v',
        method:'sum'
      }
      ]
    })
    .shape('squareColumn')
    .size('count',(value)=>{
       return value * 1000;
    })
    .active({fill:'red'})
    .style({
      coverage: 0.6
    })
    .color('count', ["#002466","#105CB3","#2894E0","#CFF6FF","#FFF5B8","#FFAB5C","#F27049","#730D1C"])
     .render();
  console.log(layer);
  });
});
</script>
</body>
</html>

